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Table 1 Descriptive data of 29 patients with lower motor facial palsy due to intra-aural tick infestation over 15 years (Described 3 time periods; 1st to 3rd phase)

From: Intra-aural tick bite causing unilateral facial nerve palsy in 29 cases over 16 years in Kandy, Sri Lanka: is rickettsial aetiology possible?

Descriptive data 1st Phase (2001–07) 2nd Phase (2008–09) 3rd Phase (2011 to 16)
Total number of patients 12 6 11
Mean age (range) years 45 (19–76) 50 (37–72) 49 (33–68)
Gender
 Male 6 3 1
 Female 6 3 10
Tick infested ear and facial palsy
 Right 4 2 5
 Left 6 4 1
No. of patients with otalgia 12 6 6
No. of patient with ear discharge 6 2 1
No. of patients with affected hearing 5 2 1
Mean duration of pain in the ear till detection of tick (range) days 5 (2–13) 3 (1–7) 4 (1–7)
Mean duration of time from pain in the ear to onset of facial palsy 7 (1–17) 5 (2–7) 5 (2–11)
Day of removal of tick from detection
 No. on same day 9 2 3
 Delayed (day range) 1–3 1–9 1–5
 No. developed palsy tick in-situ 8 3 4
 No. developed palsy after removal of tick 4 3 7
 Time range taken for onset of palsy after removal of tick 2–7 3 1–7
 No. with neuropraxia 8 5 9
 No. with axonal degeneration 4 1 2
 Time for clinical recovery (range) in months 1–55 1–3 1–13
 No. with partial recovery 2 2 2